CN202615668U - Teaching demonstration device - Google Patents
Teaching demonstration device Download PDFInfo
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- CN202615668U CN202615668U CN 201220096425 CN201220096425U CN202615668U CN 202615668 U CN202615668 U CN 202615668U CN 201220096425 CN201220096425 CN 201220096425 CN 201220096425 U CN201220096425 U CN 201220096425U CN 202615668 U CN202615668 U CN 202615668U
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- teaching demonstration
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- 230000033001 locomotion Effects 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000005653 Brownian motion process Effects 0.000 abstract 2
- 238000005537 brownian motion Methods 0.000 abstract 2
- 230000001788 irregular Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
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Abstract
The utility model discloses a teaching demonstration device, which comprises a main control circuit, a display, a sensor, a power supply and a control panel. The main control circuit is connected with the display and controls the displaying state of the display. The power supply is connected with the main control circuit and the display. The sensor and the control panel are connected with the main control circuit. The teaching demonstration device enables a learner to visually feel the similarities and the differences between a molecular thermodynamic movement phenomenon and a Brownian motion phenomenon, and makes the learner to further understand the relationships of the molecular thermodynamic movement phenomenon and the Brownian motion phenomenon with the temperature and the scientific nature reflected in the two phenomena that molecules of everything are incessantly performing irregular motion.
Description
Technical field
The utility model relates to a kind of teaching demonstration device, relates in particular to a kind of teaching demonstration device that is used for molecule random motion phenomenon and principle.
Background technology
Because the knowledge in some physical chemistry fields is more abstract and with the naked eye be difficult to observe scientific phenomena, teacher only leans on and orally tells about that demonstration is difficult to let the student understand fully thoroughly with PPT; Model through relevant comes aided education; And let student's hands-on practice; Experience the principles of science and phenomenon thereof, can not only uninteresting knowledge be become more lively like this, the student can be accepted easily and understand; Can also motivate students' interest in learning, can also alleviate teacher's teaching load simultaneously.
Though teaching demonstration device miscellaneous has appearred in prior art, also not having a kind of is the electronic instruction apparatus for demonstrating that is used for demonstration " molecule random motion "." molecule random motion " is the rule of molecular motion in the microworld; Two important knowledge points of embodying molecule random motion phenomenon are respectively molecular thermalmotion phenomenon and Brownian movement phenomenon; Molecular thermalmotion and Brownian movement are two important knowledge points must grasping in the physics teaching in secondary school; Its content is more abstract, and microphenomenon is difficult for showing very difficult these two knowledge points of discrimination when the student is learnt.Apparatus for demonstrating about the molecule random motion; Mostly as complementary teaching aid and learning aid; Be broadly divided into two big types of mechanical hook-up and chemical experimental units, and traditionally so that " the molecular motion analog demonstrator is named these devices, the not difference of display molecule thermal motion and Brownian movement; can not let the student undergo, to such an extent as to students understand is not thorough.
The utility model content
The purpose of the utility model be exactly for the operation inconvenience that overcomes existing machinery device and chemical experimental unit, effect is not good enough and human-computer interaction is not good enough, be not easy to defective such as student's thinking, understanding and provide a kind of simple in structure, easy to operate, demonstrate that effect is good, human-computer interaction good and be convenient to the teaching demonstration device that is used to demonstrate molecule random motion phenomenon and principle of students understand.This device not only makes molecular thermalmotion phenomenon and Brownian movement phenomenon image more, makes the student be convenient to distinguish the difference of two kinds of phenomenons more, and has reduced the performance requirement of required single-chip microcomputer, has reduced cost.
The utility model is realized through following technical scheme: a kind of teaching demonstration device is applicable to it is characterized in that the teaching demonstration device of molecule random motion phenomenon and principle that comprise: a display is used to show the content of teaching demonstration; One main control circuit is connected in this display, and controls this display show state; One power supply is used for to this display and this main control circuit power supply; One control panel is connected in this main control circuit; And a sensor, be connected in this main control circuit and this control panel.
According to the teaching demonstration device that claim 1 is somebody's turn to do, wherein this main control circuit comprises a STC single-chip microcomputer, and this STC single-chip microcomputer is provided with the show state of this display circuit of control in advance.
The teaching demonstration device that is somebody's turn to do according to claim 2, wherein this STC single-chip microcomputer severe that is molecular motion changes the core of demonstration with variation of temperature.
According to the teaching demonstration device that claim 3 is somebody's turn to do, wherein this single-chip microcomputer is the single-chip microcomputer of 40 pin, produces the position of random number as molecule random motion on display through random function rand ().
According to the teaching demonstration device that claim 1 is somebody's turn to do, wherein this sensor is the water proof type temperature sensor, and detected temperature value shows through this display.
The teaching demonstration device that is somebody's turn to do according to claim 1, wherein this control panel interface of being provided with microcosmic button, macroscopical button, combination button and connecting this sensor.
According to the teaching demonstration device that claim 6 is somebody's turn to do, wherein this microcosmic button is used for control and shows this molecular thermalmotion phenomenon.
Teaching demonstration device according to claim 6 is somebody's turn to do wherein should be used for this Brownian movement phenomenon of control demonstration by the macroscopic view button.
According to the teaching demonstration device that claim 6 is somebody's turn to do, wherein this combination button is used to control the combination phenomenon that shows this molecular thermalmotion and Brownian movement.
According to the teaching demonstration device that claim 1 is somebody's turn to do, wherein this power supply is a reference power supply.
Therefore; According to technology contents of the present invention; All by a kind of teaching demonstration device is provided; To solve similarities and differences and two kinds of essential contents that phenomenon was embodied from visually discerning molecular thermalmotion and Brownian movement phenomenon, make microphenomenon macroscopic viewization, visibleization, be convenient to the student and distinguish two kinds of phenomenons, understand two knowledge points.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Fig. 2 is the structural drawing of control panel.
Reference numeral:
1: display
1.1: display interface
2: sensor
3: main control circuit
4: power supply
5: control panel
5.1: the microcosmic button
5.2: macroscopical button
3.3: interface
5.4: temperature
5.5: combination button
Embodiment
Below in conjunction with accompanying drawing embodiment is explained:
The utility model has disclosed a kind of teaching demonstration device, and is as shown in Figure 1, and present embodiment provides a kind of teaching demonstration device, comprises display 1, is used to show the content of this teaching demonstration; Main control circuit 3 is connected in this display 1, and controls this display 1 show state; Power supply 4 is used for to this display 1 and these main control circuit 3 power supplies; One control panel 5 is connected in this main control circuit 3; And a sensor 2, be connected in the interface 3.3 and this control panel 5 of this main control circuit 3.
In the present embodiment; This main control circuit 3 comprises the STC single-chip microcomputer; This STC single-chip microcomputer is the core that the molecular thermalmotion phenomenon shows, this single-chip microcomputer passes through programming setting and this sensor 2 detected temperature 5.4 common display effects of controlling display circuits in advance.In the present embodiment, preferably adopt STC-12C5A series.
In the present embodiment, this display 1 is 2.4 cun color screens of 320X240 for resolution.
In the present embodiment; Like Fig. 2, this STC single-chip microcomputer is the The whole control core, when showing the molecular thermalmotion phenomenon, is provided with the Table table in the program; The code that has comprised the point that all need on display, light in the table; The Table table is used for Position Number to these codes being set, and the random number of random function rand () generation is confirmed the position that point is lighted on this display 1 as the Position Number of the code of Table table mid point then, thus the random motion of model molecule.Like Fig. 2, the time that these sensor 2 detected these temperature 5.4 data are lighted as bright spot, thus the severe of model molecule random motion is with variation of temperature; Program realizes that many red bright spots clash into a blue bright spot from different directions when showing the Brownian movement phenomenon; Make the random motion of blue bright spot; A large amount of a large amount of molecules of red bright spot representative; Blue bright spot is represented molecule, thus this Brownian movement phenomenon of simulation " a large amount of molecules carry out random motion bump molecule, make molecule produce the random motion phenomenon "; Program realizes many red bright spot random motions when showing the combination phenomenon of molecular thermalmotion and Brownian movement; And clash into a blue bright spot from different directions, make the also random motion of blue bright spot, when on the display during temperature variation; The random motion severe of red bright spot and blue bright spot can change along with variation of temperature; A large amount of a large amount of molecules of red bright spot representative, blue bright spot is represented molecule, thus the combination phenomenon of model molecule thermal motion and Brownian movement;
In the present embodiment, this display 1 is 2.4 cun color screens of 320X240 for resolution, and under the control of this main control circuit 3, the variation through these sensor 2 detected these temperature 5.4 realizes that the display part molecular motion is along with variation of temperature.
In the present embodiment, like Fig. 2, this control panel 5 is provided with the mode of operation button, comprises microcosmic button 5.1, macroscopical button 5.2, combination button 5.5.This microcosmic button 5.1 all is connected with the control end of this main control circuit 3 with these macroscopic view button 5.2 buttons, combination button 5.5.This microcosmic button 5.1 is that control shows molecular thermalmotion phenomenon process; This macroscopic view button 5.2 is that control shows Brownian movement phenomenon process; Combination button 5.5 is combination phenomenons that control shows molecular thermalmotion and Brownian movement.
In the present embodiment, like Fig. 2, this sensor 2 is water proof type temperature sensor DS18B20, and detected these temperature 5.4 values are 2.4 cun color screens demonstrations of 320X240 through this resolution.
In the present embodiment, this power supply 4 be standard+the 5V power supply.
In the present embodiment; Light a red point through being programmed on 2.4 cun color screens that this resolution is 320X240; Red point appears at the somewhere that this resolution is 2.4 cun color screens of 320X240 randomly; Can grasp temperature sensor and elevate the temperature, programming realizes that red point is shortened by the time of lighting somewhere; Temperature reduces, and programming realizes that red point is elongated by the time of lighting somewhere.
What should explain at last is: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this instructions has carried out detailed explanation with reference to the above embodiments to the utility model,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and the scope of the utility model, and it all should be encompassed in the claim scope of the utility model.
Claims (5)
1. teaching demonstration device is applicable to it is characterized in that the teaching demonstration device of molecule random motion phenomenon and principle, comprising:
One display is used to show the content of teaching demonstration;
One main control circuit is connected in this display, and controls the show state of this display;
One power supply is used for to this display and this main control circuit power supply;
One control panel is connected in this main control circuit;
One sensor is connected in this main control circuit and this control panel.
2. the teaching demonstration device that is somebody's turn to do according to claim 1, wherein this main control circuit comprises a STC single-chip microcomputer, this STC single-chip microcomputer is provided with the show state of this display circuit of control in advance.
3. the teaching demonstration device that is somebody's turn to do according to claim 1, wherein this sensor is the water proof type temperature sensor, and detected temperature value shows through this display.
4. the teaching demonstration device that is somebody's turn to do according to claim 1, wherein this control panel interface of being provided with microcosmic button, macroscopical button, combination button and connecting this sensor.
5. the teaching demonstration device that is somebody's turn to do according to claim 1, wherein this power supply is a reference power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096425 CN202615668U (en) | 2012-03-07 | 2012-03-07 | Teaching demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220096425 CN202615668U (en) | 2012-03-07 | 2012-03-07 | Teaching demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202615668U true CN202615668U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220096425 Expired - Fee Related CN202615668U (en) | 2012-03-07 | 2012-03-07 | Teaching demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202615668U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109389082A (en) * | 2018-09-30 | 2019-02-26 | 北京旷视科技有限公司 | Sight acquisition method, device, system, computer readable storage medium |
-
2012
- 2012-03-07 CN CN 201220096425 patent/CN202615668U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109389082A (en) * | 2018-09-30 | 2019-02-26 | 北京旷视科技有限公司 | Sight acquisition method, device, system, computer readable storage medium |
| CN109389082B (en) * | 2018-09-30 | 2021-05-04 | 北京旷视科技有限公司 | Sight line acquisition method, device, system and computer readable storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20140307 |